techcourse.org - robtex.com
techcourse.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 77.235.38.231🇨🇾 LEASEWEB-NL-AMS-0177.235.32.0/19 | ||||||
| PTR | srv.esbe.hr | ||||||
| NS | ns1.cyvibe.com ⭐ | ||||||
| A | 77.235.38.231🇨🇾 LEASEWEB-NL-AMS-0177.235.32.0/19 | ||||||
| PTR | srv.esbe.hr | ||||||
| NS | ns2.cyvibe.com | ||||||
| A | 77.235.38.231🇨🇾 LEASEWEB-NL-AMS-0177.235.32.0/19 | ||||||
| PTR | srv.esbe.hr | ||||||
| MX | techcourse.org ⭐ | ||||||
| A | 77.235.38.231🇨🇾 LEASEWEB-NL-AMS-0177.235.32.0/19 | ||||||
| PTR | srv.esbe.hr | ||||||
| TXT | v=spf1 ip4:77.235.38.231 +a +mx +ip4:77.235.57.96 -all | ||||||
| SOA | ns1.cyvibe.comadmin@cyvibe.com 2026-02-13 #0 | ||||||
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1773551953 | ||||||
MX for
techcourse.org |
Same first word
techcourse.ru |
techcourse.co.kr |
techcourse.org |
Similar names
DNS History
11 records (4 active, 7 former)
○NSns0.transip.net2015-08-11 → 2019-01-17 · 4 obs
● 2019-01-17 13:55:10
○ 2026-03-21 15:30:28
○ 2026-03-22 18:50:30
●NSns1.cyvibe.com2026-03-21 → 2026-03-22 · 3 obs
● 2026-03-21 15:30:28
● 2026-03-22 18:50:30
○NSns1.transip.net2015-08-11 → 2017-02-12 · 4 obs
● 2017-02-12 03:08:30
○ 2019-01-17 13:55:10
○ 2026-03-22 18:50:30
○NSns1.transip.nl2019-01-17 → 2019-01-17 · 4 obs
● 2019-01-17 13:55:10
○ 2026-03-21 15:30:28
○ 2026-03-22 18:50:30
●NSns2.cyvibe.com2026-03-21 → 2026-03-22 · 3 obs
● 2026-03-21 15:30:28
● 2026-03-22 18:50:30
○NSns2.transip.eu2019-01-17 → 2019-01-17 · 4 obs
● 2019-01-17 13:55:10
○ 2026-03-21 15:30:28
○ 2026-03-22 18:50:30
○NSns2.transip.net2015-08-11 → 2017-02-12 · 4 obs
● 2017-02-12 03:08:30
○ 2019-01-17 13:55:10
○ 2026-03-22 18:50:30
○MXrelay.transip.nl2015-08-11 → 2019-01-17 · 4 obs
● 2019-01-17 13:55:10
○ 2026-03-21 15:30:28
○ 2026-03-22 18:50:30
●MXtechcourse.org2015-08-11 → 2026-03-22 · 2 obs
● 2026-03-22 18:50:30
●A77.235.38.2312026-03-21 → 2026-03-22 · 3 obs
● 2026-03-21 15:30:28
● 2026-03-22 18:50:30
○A97.74.144.1122015-08-11 → 2019-01-17 · 4 obs
● 2019-01-17 13:55:10
○ 2026-03-21 15:30:28
○ 2026-03-22 18:50:30
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org | - |
| techcourse.org | ns2.cyvibe.com, ns1.cyvibe.com | - |
✅ Authoritative Response
Server: 77.235.38.231
NS records: ns2.cyvibe.com, ns1.cyvibe.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for techcourse.org (unsigned zone)
⏱️ Timing
Total: 623ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 77.235.38.231 |
| NS | 2 | ns2.cyvibe.com, ns1.cyvibe.com |
| MX | 1 | techcourse.org (pri: 0) |
| TXT | 1 | v=spf1 ip4:77.235.38.231 +a +mx +ip4:77. |
| SOA | 1 | ns1.cyvibe.com admin.cyvibe.com |
Analysis
Mail Server Role
techcourse.org serves as the mail server for techcourse.org.
IP Addresses
techcourse.org points to a single IP number: 77.235.38.231.
Other host names, for instance cyberthirst.com, qumb.com, biotechsurvey.com, kiss(0x736578)y.com and urgetoshop.com share IP numbers with techcourse.org.
Name Servers
techcourse.org is delegated to two name servers: ns1.cyvibe.com and ns2.cyvibe.com.
techcourse.org uses the same name server setup as other domains, for instance texuz.com, ecovegi.com, uflee.com, shopvu.com and canvasclass.com.
Host names with a single IP number:
ns1.cyvibe.com points to 77.235.38.231.
ns2.cyvibe.com points to 77.235.38.231.
Host names pointing to 77.235.38.231: ns1.cyvibe.com and ns2.cyvibe.com.
Mail Servers
A single mail server handles techcourse.org and techcourse.org.
Host name techcourse.org resolves to IP 77.235.38.231.